Validação de instrumento para construção da cadeia de custos por paciente com tuberculose drogarresistente em nível ambulatorial

Abstract

Tuberculosis is an infectious and transmissible disease that still remains a serious public health problem in Brazil and worldwide. Measuring the costs associated with tuberculosis is a challenge for researchers and managers, due to the complexity of the disease, the prolonged diagnostic process, and the various therapeutic modalities involved, especially in cases of drug-resistant tuberculosis. Increasing investments in this population is essential and, in this context, adequate cost measurement contributes significantly to improving health management, promoting greater efficiency in resource allocation and system sustainability. Therefore, it is imperative to conduct new studies aimed at evaluating and analyzing the cost flows related to the disease. Objective: To validate the content of an instrument aimed at constructing the cost chain for outpatient treatment of patients with drug-resistant tuberculosis. Method: This is a cross-sectional study with quantitative and qualitative analysis. Content validation was chosen as an expert-based assessment approach. A literature review was performed, the assessment instrument was developed for data collection, and experts assessed it, statistically analyzed it, items were changed and corrected, a second version of the instrument was developed, and a final assessment was performed, and a pilot test was conducted in the field. Results: Twenty judges were selected through snowball sampling in the first round and five for the final evaluation in the second round. The three domains (Objectivity, Clarity of Language and Relevance) showed Cronbach's alpha values between 0.80 and 0.91. The KMO test showed values of 0.62 to 0.75 and the content validity index showed CVI > 0.86. The form proved to be valid and reliable for professionals and managers in the outpatient setting.The use of the instrument could contribute to the preparation and planning of costs in the drug-resistant tuberculosis outpatient clinic, with the aim of facilitating the calculation of the cost chain and improving the effectiveness of budget management in the outpatient clinic.